Hello! That sounds like an exciting trip. Here are some travel tips for your visit to Mérida, Choroni, and Los Roques.

Best Time to Visit:
The best time to visit Mérida and Choroní in Venezuela is from November to April when the weather is drier. For Los Roques, it's pretty warm year-round, but for less rain and wind, December to April is ideal.

Route and Accessibility:
Starting with Mérida, you can fly into El Vigía airport then travel by road to Mérida, which is about an hour away. From Mérida, travel by road to Choroní which could take around 8-10 hours - the route is scenic and absolutely worth it. Post Choroní, you can reach Los Roques via a short flight from Caracas.

Accommodation and Booking:
All locations offer a wide range of accommodations, from budget to luxury options. It's best to book accommodations in advance, especially during the peak tourist season. Mérida offers posadas, hostels and hotels, Choroní is known for its charming posadas and in Los Roques, you can book posadas or guesthouses.

Clothing and Essentials:
Pack light and breathable clothing for the day and warmer layers for cooler nights in Mérida. Don't forget your swimwear for Choroní and Los Roques. A sun hat, sunscreen, insect repellent, and a good pair of walking shoes are essential as well.

Health and Safety:
It's always a good idea to have travel insurance. Make sure to check for any vaccine requirements before your trip. Stay hydrated and use sunblock to protect from sunburn. Mosquito repellents are a must for evenings. Avoid remote areas at night and keep your belongings secure.

Local Etiquette and Respect:
Venezuelans are known for their friendliness. A warm 'Hola' can invariably start any conversation. Respecting local customs and traditions is essential - remember to ask for permission before photographing locals. On the beaches, nude or topless sunbathing is generally frowned upon.